143 Threads found on edaboard.com: Step Motors
i work in a tracking system project
i need to know what kind of motor i can use ??
what is the differance in DC & stepper motors in tracking system
help me please
With a "normal" dc motor you can only control revolution (n) and the torque. With a stepper motor you can "step" exactly a given angle.
Microcontrollers :: 26.01.2005 05:04 :: eda4you :: Replies: 6 :: Views: 6073
You can do one of 2 things:
1. Use a gear to lower the speed of the motor and increase your torque. ( There are many ways, and cheap ones to do that )
2. Use a step motor. more complecated then the first option, but you can have the abilaty to speed things up...
Hobby Circuits and Small Projects Problems :: 07.04.2005 08:03 :: gidimiz :: Replies: 4 :: Views: 2080
you can use a counter and a comparator to
construct a PWM.
I have a controller for stepper motors to microsteps of 1/32, I'm writing for knowing if through a IC divisor was possible to make it to arrive to 1/64.
Which thing I can make? what I must use? I pray to you help me.
Microcontrollers :: 30.06.2005 08:03 :: power-twq :: Replies: 2 :: Views: 574
Here is a ggod link for stepper motor and its drivers
Electronic Elementary Questions :: 27.07.2005 09:06 :: eda4you :: Replies: 3 :: Views: 801
Attached is a 40V step down isolated dc/dc (input can also be up to 30Vac) converter.
It is rated ≈1A output current and has extrimely low output voltage ripple (<10 mV). For 5V output voltage you will need to change the R10/R11 ratio, and the input voltage will be between 15Vdc and ≈40Vdc..
Microcontrollers :: 22.07.2005 23:18 :: IanP :: Replies: 1 :: Views: 805
you can drive step motor with mosfet as like as bjt ,when a signal like as signal come from pc or micro the mosfet must be on and the signal can travell throw this part like switch or relay it is very nice !! isn't it?
you must bais mosfet for larg signal.. it is very easy easy than bjt.
Analog Circuit Design :: 14.08.2005 22:48 :: haerifar :: Replies: 5 :: Views: 5395
How are you controlling the motors? Where is your circuit ? Circuit details would be helpful.
I used delay (not PWM) to generate pulse and control my 4 phase unipolar stepper motor. I also used ULN2003 in the circuit.
What type of joystick you are using? Analog or digital? If it is digital then the code will be as easy as pie. Just get the
Microcontrollers :: 02.02.2006 11:13 :: fireball003 :: Replies: 3 :: Views: 2642
It looks like VVV described microstepping in just a few words, if you need to learn more on microstepping, here is an interesting article:
Electronic Elementary Questions :: 15.02.2006 21:22 :: IanP :: Replies: 8 :: Views: 1815
I have to control a stepper motor with 8051MCU using feed back. Kindly can any one guide me
Hobby Circuits and Small Projects Problems :: 07.03.2006 09:14 :: sadaqat :: Replies: 2 :: Views: 913
Hi there are two types of stepper
unipolar and bipolar. Examples and circuits for driving these motors using AVR is given in the book
MY EXPERIENCE IN PROGRAMMING AVR MICROCONTROLLER IN C USING WINAVR
It is a beginner tutorials
you can get it from yahoo group-booksbybibin
PC Programming and Interfacing :: 08.05.2006 10:02 :: yogi :: Replies: 2 :: Views: 2333
I read the tutorial "Jones on stepping motor" ( ), and have a few questions. Feel free to discuss and reply!
Permanent magnet motors tend to "cog" as you twist the rotor with your fingers, while variable reluctance motors almost spin freely (although they may cog slightly because of
Electronic Elementary Questions :: 18.04.2006 05:46 :: banh :: Replies: 1 :: Views: 563
Sorry but I dont have any good reference to share with you. But let me share how we use starting resistors when starting DC motors. As they have pointed out, current during starting is large which will damage the motor. We use starting resistors, usually 3-4 resistors. The process is actually step-starting, at initial starting all resistors are in
Electronic Elementary Questions :: 22.11.2006 01:06 :: miGs :: Replies: 9 :: Views: 1200
All the answers step by step
Control of stepping motors
Analog Circuit Design :: 01.11.2006 08:05 :: Jepeto :: Replies: 16 :: Views: 6377
I am looking for information , book and advice for linear motor. I found many short info about this motor and some explanation but if anybody have good book or construction guide for this kind of motors, ecoders and other info, please help me.
I have lot of experiance with servo motors, BDLC and step motor and some usefull projects in (...)
Robotics and Automatics Forum :: 20.11.2006 14:46 :: mr_crni :: Replies: 1 :: Views: 643
diff between unipolar and bipolar is in the way how it works. Unipolar has single common wire from all coils and you just need to set another end of the coil. in bipolar you have e.g. 2 coild with both ends connected to control circuit and you need to change polarity at the coil e.g.
Hobby Circuits and Small Projects Problems :: 20.12.2006 01:05 :: cancel :: Replies: 3 :: Views: 2000
use shift register or other "port expander"
or use ic for stepper motors e.g. from alegro.
then you need just 2 wires (direction, step)
Hobby Circuits and Small Projects Problems :: 13.02.2007 08:17 :: cancel :: Replies: 21 :: Views: 5231
Hi solid snike,
I have a project last year, called MoBot (mobile robot) using stepper motors, what code do you want ? Assembly or C? What uController you are using?
Microcontrollers :: 14.02.2007 15:24 :: the_risk_master :: Replies: 7 :: Views: 1541
Like Meade LX200 .. but I want to DIY it ..
I think 8051 + step Motor maybe can use for GOTO system
and some telescope controller also can receiver PC RS232 command
have anyone know telescope control command like skyMap /starryNight Pro
quide star can not , guide star need CCD camera for focus .
Microcontrollers :: 20.03.2007 02:23 :: andy2000a :: Replies: 1 :: Views: 685
I don't undersatnd what you mean by 2000 pulses = 1 step !!
As far as I know, stepper motors are stepped by applying a rotated sequence. And everytime a new state is output, the motor makes one step. I know this to be true as I have actually worked with stepper motors many (...)
Microcontrollers :: 29.05.2007 16:34 :: amrstaha :: Replies: 1 :: Views: 587
step is the angle that the stepper motor rotates for each clock cycle.. so to achieve that small angle you are talking about i think you have to gate just one pulse of the clock to the stepper motor....
Microcontrollers :: 31.07.2007 02:29 :: A.Anand Srinivasan :: Replies: 4 :: Views: 1089
I don't know exact specification for your project but here is the idea...
Use Relays, you can get relays that use dc power to energize the coil... and the contacts,when closed will conduct AC. Now use any microcontroller that you can program and tie outputs of the microcontroller to the coils... Use supressors (DIACS) because any back arcing will
Robotics and Automatics Forum :: 22.09.2007 21:10 :: Lucifre :: Replies: 3 :: Views: 872
the main feature of stepper motor is that it can rotate in steps which are very small angles... which an ordinary motor cant...
Electronic Elementary Questions :: 22.08.2007 23:27 :: A.Anand Srinivasan :: Replies: 4 :: Views: 439
in the data sheet of the stepper motor it is specified that
step angle is 15
5 rpm @ 200pps
torque is 60 N/cm
Can anyone tell me how to calculate the speed of the motor ?
Professional Hardware and Electronics Design :: 13.02.2008 02:01 :: Navya :: Replies: 13 :: Views: 5457
The above is a basic tutorial by Siemens AG
Mathematics and Physics :: 03.04.2008 16:58 :: Tamasco :: Replies: 5 :: Views: 2597
A 15 Volt, 12.55 Watt motor should be driven by rechargeable batteries.
Let's assume the batteries must be able to drive the motor 15 minutes.
step 1. Required Voltage
One cell has a nominal voltage of 1.2 V. So we need 13 cells in series.
step 2. Required Current
12.5 Watt at 15 V requires a current of 0.837 A. (...)
Electronic Elementary Questions :: 13.03.2008 09:29 :: mister_rf :: Replies: 1 :: Views: 507
I need some help from u guys...I am working on a project that drives UNIPOLAR stepPER motors(6 wire)...the motor is rated at 24V and i am driving it using ULN2803 which gives a logic 1 of around 5V....the problem is the motor locks at all possible step does not move basically
To test the stepper (...)
Hobby Circuits and Small Projects Problems :: 16.03.2008 06:27 :: kanishka13 :: Replies: 7 :: Views: 3714
It's ok for replace the driver circuit with L298-L297. Use only 4 terminals from motor and use circuit for full-step. You have a current limiter and the torque is high for bipolar motor. Change the supply with 30V / 2A non-stabilized, but good filtred (ex: 3300 - 4700 uF).
Robotics and Automatics Forum :: 14.04.2008 14:48 :: oscar_pdx :: Replies: 5 :: Views: 4935
Is there some guy here done sth about step motor driver, i have confused by the use of chip UPD16835 of NEC. Since it has use feedback circuit to fuction PWM, then what is the fuction of chipper in the chip.
Microcontrollers :: 18.05.2008 08:51 :: iceplanet :: Replies: 15 :: Views: 5018
Motor data can be found on
You can find how to drive 5 phase steppers here:
If you read text you will find that 5 phase motors have to be driven with 1/2 H bridge for each terminal. SI-7510 can drive 5 high side and 5 low side mosfets so for your application is good IC
Hobby Circuits and Small Projects Problems :: 10.06.2008 21:24 :: Siniąa :: Replies: 43 :: Views: 9362
what is AC1 & AC3 rating of contactor?
can anybody explain in detail?
according to IEC Category Description:
AC1 Non-inductive or slightly inductive rows
AC3 Starting of squirrel-cage motors and switching off only after the motor is up to speed.
You can follow this link to have more information:
Hobby Circuits and Small Projects Problems :: 12.06.2008 16:20 :: stefano.delfiore :: Replies: 2 :: Views: 29371
the first and second question , you can find a good answer on the internet !
In general, we use stepper motor for robotics application and home automation, they are small motor with not enought torque for complex industrial use.
The main strenght for a stepper motor is his precision, it's designed to be controlled step by (...)
Robotics and Automatics Forum :: 23.06.2008 04:47 :: GLOBIS :: Replies: 4 :: Views: 1069
As you have already identified that your application will be having two motors, now you need to choose the stepper motor that suits your application. Then you need to interface the PIC microcontroller with the stepper motor. Depending upon the stepper motor specifications you need to program the PIC. Once this (...)
Microcontrollers :: 01.08.2008 04:48 :: vhn :: Replies: 1 :: Views: 513
Try using l297 & l298 driver pair
Use Google, You can find lot of circuits for driving stepper motors
Microcontrollers :: 05.08.2008 13:41 :: nandhu015 :: Replies: 10 :: Views: 1812
i have two stepper motors at the back of the motor is written
DC 2.5 A
and on the second one
dc 14v, 0.7 A
can anyone plzz tell me how can i get the specification of these motors..???
Electronic Elementary Questions :: 01.09.2008 13:21 :: hussain_kiet :: Replies: 3 :: Views: 1241
It depend on what type of motor do you use?
There are many types :DC,BLDC,step,PM....
All the best
Microcontrollers :: 29.05.2009 02:19 :: bobcat1 :: Replies: 13 :: Views: 2504
I'm stuck on this project and I believe something is wrong with my code. I'm using a black/white wheel encoder with 24 tics on it, a infrared reflective light sensor (to detect the black and white tics), a dc motor, and a quadruple half h-driver to control the motors movement.
I want the motor to move from the black tic, to the white tic and st
Microcontrollers :: 28.07.2009 16:44 :: Engin_nerd :: Replies: 1 :: Views: 1410
Does it sounds like a good idea to make the controller having six possible combinations instead of three. The goal is to recuce cluttering between steps.
Second question: Is it the preferable way to do it, or should I stick to only three combinations?
I think like this: If it's possible controlling steppers by half steps (and (...)
Robotics and Automatics Forum :: 08.02.2010 21:16 :: Prototyp_V1.0 :: Replies: 0 :: Views: 478
If you buy 60 deg stepper motor which is step angle = 60 deg, it means 360/60 = 6 steps per revolution. You cannot modify its precision lower than 60 deg by modifying the program because step angle is fixed but you can rotate it 60, 120, 180 etc... with precision angles.
Robotics and Automatics Forum :: 08.03.2010 12:31 :: bassa :: Replies: 2 :: Views: 721
I have an embedded board running Linux, and a servo motor controller called SSC-32 which has a strange issue when communicating with
the board. I'm sure it could be regulated from the router side by programming, but I don't know how so I write here to get help.
I found out that to set SSC-32 to communicate with WRT54GL, each time I must
Embedded Systems and Real-Time OS :: 14.03.2010 07:05 :: kievari :: Replies: 3 :: Views: 884
use the SLA70762M stepper motor translator IC from Sanken, its a single chip, more robust than the L297/L298 pairs, it also occupies less space.
You can also get 1/4, 1/8 and 1/16 step motion. The datasheet for the part contains a circuit diagram that describes the detailed operation of the device.
I have myself used the same circuit to make
Microcontrollers :: 18.03.2010 02:51 :: arbj :: Replies: 4 :: Views: 2101
hello frnds i need to drive 2 stepper motors.
Rating 1.8 deg ,4.7a per phase.4 wires.
Please suggest what kind of driver should i use and also tell me what kind of power supply (volts and amperes) would b needed.
I saw this motor running in a circuit and was operating on 50 volts .
Any help is welcomed.....
Microcontrollers :: 04.04.2010 11:49 :: jit_singh_tara :: Replies: 1 :: Views: 1742
So i am looking for a solution to a seemingly simple problem. I have two DC motor boards and two DC motor brakes. I am using a microcontroller to tell the DC motors to step when i want to. The problem is, my microcontroller sends out a HIGH 3.3V signal to step the motor. I want to be able to cut the power when i'm not using the (...)
Hobby Circuits and Small Projects Problems :: 02.05.2010 20:01 :: logicwizard :: Replies: 3 :: Views: 1094
UIM stepper motor controller/driver
UIrobot featured stepper Motor Controllers size only 42.3mm*42.3mm*13.5mm which include Parallel, Serial and CAN Protocol type stepper Controllers for directly mounting onto size 42/57/86/110 and so on stepper motors. Super compact volume, high performance, standalone or (...)
EDA Jobs :: 25.05.2010 02:25 :: steprobot :: Replies: 1 :: Views: 490
I am building a robot but have problem to choosing it's motor.
my robot's weight is about 10kg with 30kg load of cable .
in first step I test DC motors (with gearbox)but when the robot go about 40 m the Friction of cable with earth don't give permission to move .
speed of movement : 3m per minutes
with this comments, can you help me, I
Robotics and Automatics Forum :: 01.07.2010 01:53 :: rezaf :: Replies: 1 :: Views: 1067
im working a project using PIC16F877A to generate six gating signals to control three phase inverter.the output voltage from the inverter should be of variable frequency and im using square wave operation(six step modulation) &open loop type.
would you pls help me in developing the C code to get a variable frequency? thank you in advance for y
Microcontrollers :: 08.07.2010 03:00 :: aalevoltage :: Replies: 1 :: Views: 649
before jumping into the circuit u must know the type of ur stepper motors,
here it is
Let me google that for you
Microcontrollers :: 07.11.2010 02:00 :: hameeds01 :: Replies: 5 :: Views: 545
Hello everyone, i want to start a project with the microcontroller above
and i was wondering if i can controll 2 stepper motors with this mC.
I only want to use one so i just want to make sure that this mC has the ability
to control two motors at the same time. Should i use pwm?? Cause i have found a way that i dont need to
Microcontrollers :: 24.11.2010 16:21 :: mrcube_ns :: Replies: 6 :: Views: 554
You will need the power drivers. This board gives you only the motion controller part. It will generate the direction for each motor, and the command to put one step in that direction. The faster the step command comes, the faster the motor will run.
Are your motors unipolar or bipolar types? What speed you want to run them?
Electronic Elementary Questions :: 28.12.2010 15:51 :: svhb :: Replies: 4 :: Views: 931
Most instruments utilizing stepper motors have a reference or zero position sensor and are counting steps from this known position. On power on, they usually start seeking the zero position. If position loss must be expected, e.g. caused by manual user intervention, they repeat this on every new action.
Hobby Circuits and Small Projects Problems :: 02.01.2011 10:49 :: FvM :: Replies: 8 :: Views: 2295
Usually electrical appliances operate on direct supply voltage (110V/230V) without the need for step down using step down transformer or SMPS ex: water pump motor, electric heater etc
While electronic appliances usually makes a step down conversion using a step down transformer or SMPS instead of directly applying supply (...)
Power Electronics :: 02.02.2011 05:31 :: prince213 :: Replies: 5 :: Views: 445